Air-valve.



Patented ont. 24, |899.

W. J. COLE.

AIR VALVE.

(Application ilucl June 15, 1898.)

(Nq Model.)

Tn: nonms Patins co.. Pnowoufna., wAsmNG'mN. u. c.

lair.

Nrrni) STATES VILLIAM JACKSON COLE, OF EVANSVILLE, INDIANA.

AIR-VALVE.

SPECIFICATION forming part of Letters Patent N o. 635,661, dated October 24, 1899.

Application filed .I une 15, 1898.

'To all whom t may con/cern:

Be it known that I, WILLIAM JACKSON COLE, a citizen of the United States, residing at Evansville, in the county of Vauderburg and State of Indiana, have invented certain new and useful Improvements in Air-Valves, of which the following is a specification.

My invention relates to air-valves to be attached to pneumatic tires on bicycles and other vehicles.

The object of my invention is to provide a valve with a stem or casing that may be permanent-ly attached to the inflatable tube and from which casing the valve proper may be conveniently re moved and replaced, that may be opened or hermetically closed, that will permit of easy inflation and deflation, and is without internal angles, nipples, crevices, guides, springs, or washers. To these ends I have devised the improved valve hereinafter described and claimed.

Figure 1 represents a view of a section of the casing for securing the valve-stem to the tire. Fig. 2 representsa view of the plug having the valve-seatthereon. Fig. 3 represents a cross-sectional View on line x fr, Fig. 5, of the body of the valve. Fig. 4 represents a View of the conical valve with threaded stem and set-nut thereon. Fig. 5 represents a View of a vertical section of the entire valve.

The tubular shell or casing a (shown in Fig. l) may be made of one piece, or the stern may be pressed into head-piece 7c. Said casing is provided with threads a from the external end to near the head 7c to receive the nuts m n and a few threads b on the inside at the outer end to receive the threads o of the valveseat piece f. (Shown on Fig. 2.) The head 7c is perforated, having a smallhole d on either side of the center for the ingress and exit of Said head-piece kis not to be removed from the inflatable tube for any purpose, but is to be Vmade to grasp the edge of the aperture in said tube by means of a Washer Z and jam-nut m or other means that lwill prevent leakage. The casing a is to be passed through the rim of the wheel and secured in place by nut n or otherwise, or the said casing may be made without the threads a', head-piece 7o, washer l, and nuts m n and be so shaped as to admit of attachment to the inflatable tube Serial No. 683,533. (No model.)

by means of the rubber connections now in common use.

The valve-seatf, as shown in Fig. 2, and the entire inner surface of the valve-seat piece f are made smooth to avoid dust accumulations, and so is the external surface of the internal end up to threads c, which part is intended to slip freely into the opening in the casing (shown in Fig. l) until the threads b o engage, When the insertion. is completed by rotary screw motion, which may be iinished with great power by applying a Wrench to the nut-head e on the piece f. The inner end of said valve-seat piece f (shown in Fig. 2) has a flared cup or valve-seatffor receiving the conical valve g. (Shown in Fig. 4:.)

Just external to the threads c and sunken into nut-head e is a small groove t' for receiving a rubber orleather washer, against which the external end of the aforesaid stem or casing is forced with power sullicientto prevent leakage. The external end of said seat-piece f is provided with threads j for receiving the pump connection and dust-cap, and the external Opening is flared to more readily admit the air through the grooves h in set-nut 7i.

By loosening the set-nut h the valve g is permitted to rise from its seat f in the usual Way by air-pressure during inflation, and when inflation ceases the internal air-pressure automatically forces the conical valve g against the valve-seat f, preventing the loss of air while the pump is being detached and the set-nut h tightened. Y

The rubber conical valve g, as shown in Figs. 2 and 5 of the drawings, is designed to be compressed between two metal surfaces.

By turning set-nut h to the right the thin metal head p and the metal valve-seat f are made to approach each other, thus compressing the said conical valve g With any degree of power desired to prevent leakage.

Having thus described my invention, what I desire to claim and secure by Letters Patent is- 1. In a valve for pneumatic tires, an internally-threaded casing withoutinternal shoulder or valve-seat, combined with a valve-seat piece having a longitudinal smooth-bore passage therethrough and containing a valveseat at the internal end and a flared opening IOO at the external end thereof, a valve-stem aforesaid,a valve-stem extending through the 1o holding a combined metal and rubber conical longitudinal passage in said Valve-seat piece valve on the internal end and threads on the and receiving on its externally-threaded end external end with a grooved set-nut on said a grooved set-nut adapted to force and hold threads substantially asset forth and shown the valve against the Valve-seat. i

in the drawings. VILLIAM JACKSON COLE.

2. In a Valve for pneumatic tires, a casing XVitnesses: andvalve-seat piece in combination with a AZRO DYER,

combined metal and rubber conical valve as WM. REISTER. 

